This drops patch 010-cross-compile-fixes.patch
No longer required after:
- https://github.com/sudo-project/sudo/pull/109
- https://github.com/sudo-project/sudo/pull/111

The host-build part can be dropped as the build can now handle building the
mksigname & mksiglist tools with the host tools.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>